Refine your search
Co-Authors
Journals
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z All
Rajesh, N.
- Carrier Synchronization in Software Defined Radio using Costas Loop
Abstract Views :472 |
PDF Views:0
Authors
Affiliations
1 School of Computing (VLSI), SASTRA University, 613401, Thanjavur, Tamilnadu, IN
2 School of EEE, SASTRA University, 613401, Thanjavur, Tamilnadu, IN
1 School of Computing (VLSI), SASTRA University, 613401, Thanjavur, Tamilnadu, IN
2 School of EEE, SASTRA University, 613401, Thanjavur, Tamilnadu, IN
Source
Indian Journal of Science and Technology, Vol 6, No 6 (2013), Pagination: 4697-4701Abstract
This paper presents carrier synchronization in software defined radio for 8PSK technique. Software Defined Radio (SDR) plays a major solution for the need for flexibility, upgradability, and the problems of implementing multiple radio standards alternatively and even running several services in parallel. Previously carrier synchronization in software defined radio is implemented using QPSK technique and synchronization is done using PLL concept. The drawback in this we can transmit only few (only two) number of bits while synchronization is performed. The carrier synchronization by software defined radio using 8PSK technique will allow more number (three) of bits during synchronization, and the same bandwidth which is used for QPSK technique. The main advantage is the transmitting of three bits which reduces the time consumption and the synchronization is performed using COSTAS LOOP. The purpose and advantage of Costas loop compared to PLL is error voltage. The error voltage is less in Costas loop, due to this synchronization is performed effectively. The complete codings are coded using MATLAB.Keywords
Software Defined Radio, 8PSK, Costas LoopFull Text
References
- Dick C, Harris F et al. (2000). Synchronization in software radios - carrier and timing recovery using FPGAs, Field-Programmable Custom Computing Machines, 2000 IEEE Symposium, 195-204.
- Rodriguez A S, Mensinger M M et al. (2011). Model-based Software-defined Radio (SDR) design using FPGA, Electro/Information Technology (EIT), 2011 IEEE International Conference, 1-6.
- Alluri V B, Heath J R et al. (2010). A new multichannnel, coherent amplitude modulated, gate array technology implementation, IEEE Transaction on Signal Processing, vol 58(10), 5369-5384.
- Katz S, and Flynn J (2009). Using Software Defined Radio (SDR) to demonstrate concepts in communications and signal processing courses, Frontiers in Education Conference, 1-6.
- Zhang B (2009). Real-time software-defined-radio implementation of time-slotted carrier synchronization for distributed beamforming, Chapter 2, 10-14.
- Husted P J. Design and implementation of digital timing recovery and carrier synchronization for high speed wireless communications, Research Project, Chapter 3, 37-40.
- Mileant A, and Hinedi S (1989). Costas loop lock detection in the advanced receiver, TDA Progress Report, 72-89.
- Resistive EM Wave Absorber Using Phase Cancellation Technique
Abstract Views :176 |
PDF Views:2
Authors
Affiliations
1 KPR Institute of Engineering and Technology, Coimbatore, IN
1 KPR Institute of Engineering and Technology, Coimbatore, IN
Source
Fuzzy Systems, Vol 6, No 2 (2014), Pagination: 27-29Abstract
In this paper electromagnetic absorber is proposed to control the radiation emanated from the base transceiver station using metallic patches and resistive sheets. The design is for third generation spectrum centered at 2.140 GHz . The notion is to enhance the bandwidth by convoluted structures. It has given the bandwidth of 120 MHz at 30dB. Experimental results are presented and compared with the simulated one. The equivalent circuit model is also discussed to validate the design.Keywords
Electromagnetic Absorbers, High-Impedance Surfaces (HIS), Radar Cross Section, Radar Absorbing Material (RAM), Resistive Frequency Selective Surfaces (RFSS).
- Professional Education-Concepts and Innovation
Abstract Views :132 |
PDF Views:2
Authors
Source
International Journal of Innovative Research and Development, Vol 2, No 1 (2013), Pagination: 237-242Abstract
This paper discusses the the current situation prevailing in professional education. The authors have conducted researches in the professional collegses and have come to the conclusion that more attention could be given to practical examinations than the theory examinations. This article also deals subjects like expansion, equity, excellence, employability etc.Full Text
- Ecosystem Services of Coastal Wetlands for Climate Change Mitigation: An Economic Analysis of Pokkali and Kaipad-Based Rotational Paddy Farming Systems in India
Abstract Views :163 |
PDF Views:89
Authors
C. Ramachandran
1,
Shinoj Parappurathu
2,
Reshma Gills
2,
A. R. Anuja
2,
Shelton Padua
3,
R. Ratheesh Kumar
3,
N. Rajesh
4
Affiliations
1 Fishery Resources Assessment, Economics and Extension Division, Kochi 682 018, IN
2 Fishery Resources Assessment, Economics and Extension Division, Kochi 682 018, IN
3 Marine Biodiversity and Environment Management Division, Kochi 682 018, IN
4 Mariculture Division, ICAR-Central Marine Fisheries Research Institute, Kochi 682 018, IN
1 Fishery Resources Assessment, Economics and Extension Division, Kochi 682 018, IN
2 Fishery Resources Assessment, Economics and Extension Division, Kochi 682 018, IN
3 Marine Biodiversity and Environment Management Division, Kochi 682 018, IN
4 Mariculture Division, ICAR-Central Marine Fisheries Research Institute, Kochi 682 018, IN
Source
Current Science, Vol 125, No 2 (2023), Pagination: 156-164Abstract
Climate change and associated weather aberrations are wreaking havoc on the performance of production systems worldwide. Because of their proximity to the sea and risk of exposure, coastal wetlands are regarded as one of the most climatically vulnerable production systems. As a result, interventions to improve their adaptation and resilience to climate change are critical. We attempted to investigate the multifunctional ecosystem roles and services provided by the Pokkali and Kaipad paddy-based rotational farming systems on the southwest coast of India, which are being revived through a pilot programme implemented by the Kerala Agency for Development of Aquaculture. The physical and economic dimensions of the ecosystem services/disservices are assessed, and policy options for further land revival and area expansion of such wetlands are proposed.Keywords
Climate Mitigation, Ecosystem Services, Ecosystem Valuation, Market Price Method, Pokkali/Kaipad Ecosystems, Replacement Cost Method, Wetland Ecosystem.Full Text
References
- IPCC, Climate change 2022: impacts, adaptation and vulnerability. Contribution of working group II to the sixth assessment report of the intergovernmental panel on climate change (eds Pörtner, H. O. et al.), Cambridge University Press, Cambridge, UK, 2022, p. 3056; doi:10.1017/9781009325844.
- Doukakis, E., Coastal vulnerability and risk parameters. Eur. Water, 2005, 11, 3–7.
- Voice, M., Harvey, N. and Walsh, K., Vulnerability to climate change of Australia’s coastal zone: analysis of gaps in methods, data and system thresholds. Report to the Australian Greenhouse Office, Canberra, Australia, 2006.
- Muehe, D., Brazilian coastal vulnerability to climate change. PanAm. J. Aquat. Sci., 2010, 5, 173–183.
- Ramieri, E. et al., Methods for assessing coastal vulnerability to climate change. ETC CCA Technical Paper, 2011, 1, 1–93.
- Moser, S. C., Jeffress Williams, S. and Boesch, D. F., Wicked challenges at land’s end: managing coastal vulnerability under climate change. Annu. Rev. Environ. Resour., 2012, 37, 51–78; https://www.annualreviews.org/doi/abs/10.1146/annurev-environ-021611-135158.
- Islam, M. M., Barman, A., Kundu, G. K., Kabir, M. A. and Paul, B., Vulnerability of inland and coastal aquaculture to climate change: evidence from a developing country. Aquac. Fish., 2019, 4, 183–189; https://www.sciencedirect.com/science/article/pii/S2468550X-17301648
- Kantamaneni, K., Rice, L., Yenneti, K. and Campos, L. C., Assessing the vulnerability of agriculture systems to climate change in coastal areas: a novel index. Sustainability, 2020, 12, 4771.
- Foote, A. L., Pandey, S. and Krogman, N. T., Processes of wetland loss in India. Environ. Conserv., 1996, 23, 45–54; https://www.cambridge.org/core/journals/environmental-conservation/article/abs/processes-of-wetland-loss-in-india/1400577A6E1E8E43CB647E3-B604C4409
- Patel, J. G., Murthy, T. V. R., Singh, T. S., Panigrahy, S., Shankar Ray, S. and Parihar, J. S., Analysis of the distribution pattern of wetlands in India in relation to climate change. In Proceedings of the Workshop on Impact of Climate Change on Agriculture, Ahmedabad, India, 2009, pp. 17–18; http://hpccc.gov.in/PDF/Water%-20Ecosystem/Analysis%20of%20the%20Distribution%20Pattern%-20of%20Wetlands%20in%20India%20in%20Relation%20to%20Climate%20Change.pdf
- Sarkar, U. K., Nag, S. K., Das, M. K., Karnatak, G. and Sudheesan, D., Conserving wetlands – an effective climate change adaptation in India. Bulletin No. NICRA/CIFRI/2015-16/2. ICAR-Central Inland Fisheries Research Institute, Barrackpore, 2016.
- Sarkar, U. K. and Borah, B. C., Flood plain wetland fisheries of India: with special reference to impact of climate change. Wet. Ecol. Manage., 2018, 26, 1–15; https://link.springer.com/article/10.1007/s11273-017-9559-6
- Mehvar, S., Filatova, T., Sarker, M. H., Dastgheib, A. and Ranasinghe, R., Climate change-driven losses in ecosystem services of coastal wetlands: a case study in the West coast of Bangladesh. Ocean Coast. Manag., 2019, 169, 273–283; https://www.science-direct.com/science/article/abs/pii/S0964569118305180
- Vincent, S. G. T. and Owens, K. A., Coastal wetlands of India: threats and solutions. Wetl. Ecol. Manage., 2021, 29, 633–639; https://link.springer.com/article/10.1007/s11273-021-09824-6.
- ADAK, Detailed project report for national adaptation fund. Promotion of integrated farming system of Kaipad and Pokkali in coastal wetlands of Kerala 2015–16 to 2018–19, Agency for Development of Aquaculture, Kerala, 2015; http://moef.gov.in/wp-content/ uploads/2017/08/Kerala.pdf
- Jayan, P. R. and Sathyanathan, N., Overview of farming practices in the water-logged areas of Kerala, India. Int. J. Agric. Biol. Eng., 2010, 3, 28–43; http://ijabe.org/index.php/ijabe/article/view/333/195
- Mohan, A. and Prasanna, C. K., Indigenous farming in Kerala: a sustainable social-ecological model. In Sustainable Agriculture and Food Security, Springer, Cham, USA, 2022, pp. 107–123; https://link.springer.com/chapter/10.1007/978-3-030-98617-9_7
- Cochrane, K., De Young, C., Soto, D. and Bahri, T., Climate change implications for fisheries and aquaculture. FAO fisheries and aquaculture technical paper, 530, 2009, p. 212.
- Venkateswarlu, B. and Shanker, A. K., Climate change and agriculture: adaptation and mitigation strategies. Indian J. Agron., 2009, 54, 226.
- Zacharia, P. U., Gopalakrishnan, A., Grinson, G., Muralidhar, M. and Vijayan, K. K., Climate change impact on coastal fisheries and aquaculture in the SAARC region: Country paper – India, 2016, pp. 1–25.
- Poulain, F. et al., Methods and tools for climate change adaptation in fisheries and aquaculture. In Impacts of Climate Change on Fisheries and Aquaculture, FAO Fisheries and Aquaculture, 2018, p. 535.
- Gomez-Zavaglia, A., Mejuto, J. C. and Simal-Gandara, J., Mitigation of emerging implications of climate change on food production systems. Food Res. Int., 2020, 134, 109256; doi:10.1016/j.foodres.2020.109256
- Abisha, R., Krishnani, K. K., Sukhdhane, K., Verma, A. K., Brahmane, M. and Chadha, N. K., Sustainable development of climate-resilient aquaculture and culture-based fisheries through adaptation of abiotic stresses: a review. J. Water Clim. Chang., 2022, 13, 2671–2689; doi:10.2166/wcc.2022.045
- Costanza, R. et al., The value of the world’s ecosystem services and natural capital. Ecol. Econ., 1998, 25, 3–15.
- DEFRA, An introductory guide to valuing ecosystem services, Department of Environment Food and Rural Affairs, UK, London, 2007.
- Gómez-Baggethun, E., Barton, D. N., Berry, P., Dunford, R. and Harrison, P. A., Concepts and methods in ecosystem services valuation. Routledge Handbook of Ecosystem Services, 2016, pp. 99–111.
- Bann, C., The economic valuation tropical forest land use options: a manual for researchers. The Economy and Environment Program for Southeast Asia, Singapore, 1997.
- Huang, C. C., Tsai, M. H., Lin, W. T., Ho, Y. F. and Tan, C. H., Multifunctionality of paddy fields in Taiwan. Paddy Water Environ., 2006, 4, 199–204.
- de Groot, R. et al., Global estimates of the value of ecosystems and their services in monetary units. Ecosyst. Serv., 2012, 1, 50–61.
- Rolando, J. L., Turin, C., Ramirez, D. A., Marez, V., Monerris, J. and Quiroz, R., Key ecosystem services and ecological intensification of agriculture in the tropical high-Andean Puna as affected by land-use and climate changes. Agric. Ecosyst. Environ., 2017, 236, 221–233.
- Carson, R. M. and Bergstrom, J. C., A review of ecosystem valuation techniques. Department of Agricultural and Applied Economics, University of Georgia, Athens, 2003.
- Millennium Ecosystem Assessment. Ecosystems and Human Well-being: Synthesis, Island Press, Washington, DC, 2005.
- Rasheed, S., Venkatesh, P., Singh, D. R., Renjini, V. R., Jha, G. K. and Sharma, D. K., Ecosystem valuation and eco-compensation for conservation of traditional paddy ecosystems and varieties in Kerala, India. Ecosyst. Serv., 2021, 49, 101272.
- Pimentel, D. et al., Environmental and economic costs of soil erosion and conservation benefits. Science, 1995, 267, 1117–1122.
- Kim, J. B., Saunders, P. and Finn, J. T., Rapid assessment of soil erosion in the Rio Lempa Basin, Central America, using the universal soil loss equation and geographic information systems. Environ. Manage., 2005, 36, 872–885.
- Liu, Y. et al., Rice paddy soils are a quantitatively important carbon store according to a global synthesis. Commun. Earth Environ., 2021, 2, 1–9; https://doi.org/10.1038/s43247-021-00229-0
- Wu, J., Carbon accumulation in paddy ecosystems in subtropical China: evidence from landscape studies. Eur. J. Soil Sci., 2011, 62, 29–34.
- Nayak, A. K. et al., Assessment of ecosystem services of rice farms in eastern India. Ecol. Process., 2019, 8, 1–16; https://doi.org/10.1186/s13717-019-0189-1
- Gnanamoorthy, P., Selvan, V., Ramasubramanian, R., Chakraborty, S., Pramit, D. and Karipot, A., Soil organic carbon stock in natural and restored mangrove forests in Pichavaram south-east coast of India. Indian J. Mar. Sci., 2019, 48, 801–808.
- Alongi, D. M., Carbon sequestration in mangrove forests. Carbon Manage., 2014, 3, 313–322.
- Ray, R. et al., Carbon sequestration and annual increase of carbon stock in a mangrove forest. Atmos. Environ., 2011, 45, 5016–5024; doi:10.1016/j.atmosenv.2011.04.074.
- Patle, G. T., Singh, D. K., Sarangi, A. and Sahoo, R. N., Modelling of groundwater recharge potential from irrigated paddy field under changing climate. Paddy Water Environ., 2017, 15, 413–423.
- Yadav, S., Humphreys, E., Kukal, S. S., Gill, G. and Rangarajan, R., Effect of water management on dry seeded and puddled transplanted rice: Part 2: Water Balance and Water Productivity. Field Crops Res., 2011, 120, 1–132; doi:10.1016/j.fcr.2010.09.003
- Kerala water authority. Water Charge Tariff, 2022; https://kwa.kerala.gov.in/.
- Kim, H. S., Soil erosion modeling using RUSLE and GIS on the Imha watershed, South Korea. Master’s thesis, Colorado State University, Fort Collins, CO, USA, 2006.
- OECD, Carbon pricing in times of covid-19: What has changed in G-20 economies? 2021; www.oecd.org/tax/taxpolicy/carbon-pricing-in-times-of-covid-19-what-has-changedin-g20-economies.htm
- Pathak, H. and Wassman, R., Greenhouse gas emissions from Indian rice fields: calibration and upscaling using the DNDC model. Biogeosci. Discuss., 2005, 2, 77–102.
- Ali, M. A., Inubushi, K., Kim, P. J. and Amin, S., Management of paddy soil towards low greenhouse gas emission and sustainable rice production in the changing climatic conditions. In Soil Contamination and Alternatives for Sustainable Development (eds Vazquez-Luna, D. and Cuevas-Diaz, M. C.), 2019; doi:10.5772/inechopen.83548.